Hi Matt, thanks so much for your input! So when you talk about bugs are investigated for URLSession and WKWebView I can assume that those APIs are expected to honor NSPinnedDomains and Apple eventually will provide fixes, right? What about ASWebAuthenticationSession or SFSafariViewController? Should NSPinnedDomains be honored here theoretically? At least in my testing, I was not able to make it work for SFSafariViewController so I even didn't bother to try for ASWebAuthenticationSession

The absence of this protocol in Beta 1 is a known issue that is mentioned under the Known Issues at https://developer.apple.com/documentation/Xcode-Release-Notes/xcode-14-release-notes.

Google "View all public frameworks from Apple and filter based on platform and availability" which will lead you to a website for an easy comparison of which Apple frameworks are available on which platform. Please note that even if a framework is available on a platform there might be less APIs available. Example: UIKit is available on visionOS but UIScreen is not